Drinking Water Compliance OS

PORT ORCHARD, MT · Yellowstone County

RIVER GROVE ESTATES TR CT Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Montana’s official records. Always confirm current status with Montana before making decisions based on this information.

System facts

System ID (PWSID)
MT0000123
System type
Community Water System
Population served
100
Service connections
48
Ownership
privately owned
Water source
groundwater (wells)

Violation history

  • Monitoring of Treatment (SWTR-Unfilt/GWR)

    Groundwater Rule

    July 1, 2024 – July 31, 2024

    Resolved
  • Monitoring of Treatment (SWTR-Unfilt/GWR)

    Groundwater Rule

    October 1, 2023 – October 31, 2023

    Resolved
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    December 1, 2021 – December 31, 2021

    Resolved
  • Monitoring of Treatment (SWTR-Unfilt/GWR)

    Groundwater Rule

    March 1, 2021 – March 31, 2021

    Resolved
  • Monitoring of Treatment (SWTR-Unfilt/GWR)

    Groundwater Rule

    March 1, 2020 – March 31, 2020

    Resolved
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    July 1, 2019 – July 31, 2019

    Resolved
  • Monitoring of Treatment (SWTR-Unfilt/GWR)

    Groundwater Rule

    September 1, 2017 – September 30, 2017

    Resolved
  • Monitoring of Treatment (SWTR-Unfilt/GWR)

    Groundwater Rule

    January 1, 2017 – January 31, 2017

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2015 – September 20, 2016

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    July 1, 2014 – July 31, 2014

    Resolved
  • Monitoring of Treatment (SWTR-Unfilt/GWR)

    Groundwater Rule

    April 1, 2014 – April 30, 2014

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    October 1, 2012 – December 31, 2012

    Resolved
  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    October 1, 2012 – November 7, 2022

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2012 – November 7, 2022

    Resolved
  • Lead Consumer Notice

    Lead and Copper Rule

    January 1, 2012 – March 5, 2012

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    December 1, 2011 – December 31, 2011

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    April 1, 2011 – June 15, 2011

    Resolved
  • Lead Consumer Notice

    Lead and Copper Rule

    January 1, 2011 – March 21, 2011

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    July 1, 2010 – September 30, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    Total Haloacetic Acids (HAA5)

    July 1, 2010 – September 30, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    July 1, 2010 – September 30, 2010

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    May 1, 2010 – May 31, 2010

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    April 1, 2008 – April 30, 2008

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    March 1, 2008 – March 31, 2008

    Resolved
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    January 1, 2008 – March 31, 2008

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    January 1, 2008 – March 31, 2008

    Resolved
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    October 1, 2007 – December 31, 2007

    Resolved
  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Nitrate-Nitrite

    October 1, 2007 – November 23, 2007

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    October 1, 2007 – December 31, 2007

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2007 – July 31, 2008

    Resolved
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    July 1, 2007 – May 23, 2008

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    April 1, 2007 – November 2, 2006

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    April 1, 2007 – June 30, 2007

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    January 1, 2007 – March 31, 2007

    Resolved
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    January 1, 2007 – May 23, 2008

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2006 – May 2, 2007

    Resolved
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    July 1, 2006 – May 23, 2008

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    April 1, 2006 – June 30, 2006

    Resolved
  • Water Quality Parameter M/R

    Lead and Copper Rule

    January 1, 2006 – June 30, 2006

    Resolved
  • Monitoring and Reporting (DBP)

    Total Haloacetic Acids (HAA5)

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    January 1, 2006 – March 31, 2006

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    November 1, 2005 – November 30, 2005

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    October 1, 2005 – December 31, 2005

    Resolved
  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Nitrate-Nitrite

    October 1, 2005 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    July 1, 2005 – September 30, 2005

    Resolved
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    July 1, 2005 – May 23, 2008

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    April 1, 2005 – June 30, 2005

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2005 – December 31, 2007

    Resolved
  • Water Quality Parameter M/R

    Lead and Copper Rule

    January 1, 2005 – June 30, 2005

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    January 1, 2005 – December 31, 2005

    Resolved
  • Monitoring and Reporting (DBP)

    Total Haloacetic Acids (HAA5)

    January 1, 2005 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Barium

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Chromium

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Fluoride

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Nickel

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Beryllium, Total

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2005 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Selenium

    January 1, 2005 – December 31, 2007

    Resolved
  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Nitrate-Nitrite

    July 1, 2004 – September 30, 2004

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    October 1, 2003 – December 31, 2003

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    April 1, 2003 – June 30, 2003

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    January 1, 2003 – March 31, 2003

    Resolved
  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Nitrate-Nitrite

    October 1, 2002 – December 31, 2002

    Resolved
  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Nitrate-Nitrite

    October 1, 2002 – December 31, 2002

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    July 1, 2002 – September 30, 2002

    Resolved
  • Monitoring, Regular

    Aldicarb

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Aldicarb sulfoxide

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Toxaphene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Methoxychlor

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Asbestos

    January 1, 2002 – December 31, 2010

    Archived
  • Monitoring, Regular

    Chlordane

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    LASSO

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Nitrate-Nitrite

    October 1, 2001 – December 31, 2001

    Resolved
  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Nitrate-Nitrite

    July 1, 2001 – September 30, 2001

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    February 1, 1998 – February 28, 1998

    Resolved
  • Monitoring, Repeat Major (TCR)

    Coliform (TCR)

    June 1, 1997 – June 30, 1997

    Resolved
  • Monitoring, Repeat Major (TCR)

    Coliform (TCR)

    May 1, 1997 – May 31, 1997

    Resolved
  • Monitoring, Repeat Major (TCR)

    Coliform (TCR)

    June 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Repeat Major (TCR)

    Coliform (TCR)

    May 1, 1996 – May 31, 1996

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Dalapon

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Aldicarb sulfoxide

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Repeat Minor (TCR)

    Coliform (TCR)

    January 1, 1996 – January 31, 1996

    Resolved
  • Monitoring, Regular

    2,4-D

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Aldicarb

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Beryllium, Total

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 1996 – December 31, 1998

    Resolved
  • Monitoring, Repeat Major (TCR)

    Coliform (TCR)

    August 1, 1995 – August 31, 1995

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    April 1, 1995 – April 30, 1995

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 1994 – December 31, 1994

    Archived
  • Monitoring, Regular

    Nitrate

    January 1, 1993 – December 31, 1993

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    June 1, 1992 – June 30, 1992

    Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Contact

ROMACK, CALEB

360-669-3593

PORT ORCHARD, WA 98366